Member Contributer kostritzer Posted August 20, 2011 Member Contributer Share Posted August 20, 2011 I'm not sure yet, I haven't weighed anything since the project began. I'm still trying to decide what to do about the tank and bodywork since there should be some weight to save there. I'll be happy if I can get it down to 350lbs/160kgs wet. I still need to remove the stator and rotor as well. Link to comment Share on other sites More sharing options...
Guest Posted August 21, 2011 Share Posted August 21, 2011 I'm not sure yet, I haven't weighed anything since the project began. I'm still trying to decide what to do about the tank and bodywork since there should be some weight to save there. I'll be happy if I can get it down to 350lbs/160kgs wet. I still need to remove the stator and rotor as well. I did that that saves about 4 kg on, go for carbonfiber , saves you alot and aluminum tank, and use the fiberpart as cover! that steel tank is awfully heavy. I'm curious how this ends, looking forward to see finished, post pictures! Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted August 21, 2011 Member Contributer Share Posted August 21, 2011 I'm not sure yet, I haven't weighed anything since the project began. I'm still trying to decide what to do about the tank and bodywork since there should be some weight to save there. I'll be happy if I can get it down to 350lbs/160kgs wet. I still need to remove the stator and rotor as well. I did that that saves about 4 kg on, go for carbonfiber , saves you alot and aluminum tank, and use the fiberpart as cover! that steel tank is awfully heavy. I'm curious how this ends, looking forward to see finished, post pictures! I do have a 600RR tank cover and have been debating fabricating an aluminum fuel cell. Once the chassis and exhaust have been figured out, I'll be tackling the tank and the bodywork. Once I have the bike sitting on its wheels with the dogbone clevis welded in, ill start a thread on the project. The wheels are currently at the powder coater, and I've stripped the swingarm down to the bare aluminum. Once I get everything back then I should be able to get the chassis sorted pretty quickly. Link to comment Share on other sites More sharing options...
Guest Posted August 22, 2011 Share Posted August 22, 2011 I'm not sure yet, I haven't weighed anything since the project began. I'm still trying to decide what to do about the tank and bodywork since there should be some weight to save there. I'll be happy if I can get it down to 350lbs/160kgs wet. I still need to remove the stator and rotor as well. I did that that saves about 4 kg on, go for carbonfiber , saves you alot and aluminum tank, and use the fiberpart as cover! that steel tank is awfully heavy. I'm curious how this ends, looking forward to see finished, post pictures! I do have a 600RR tank cover and have been debating fabricating an aluminum fuel cell. Once the chassis and exhaust have been figured out, I'll be tackling the tank and the bodywork. Once I have the bike sitting on its wheels with the dogbone clevis welded in, ill start a thread on the project. The wheels are currently at the powder coater, and I've stripped the swingarm down to the bare aluminum. Once I get everything back then I should be able to get the chassis sorted pretty quickly. You will be surprised how well it behaves, rocksteady... Link to comment Share on other sites More sharing options...
Guest Posted September 25, 2011 Share Posted September 25, 2011 bump for interest and updates. Link to comment Share on other sites More sharing options...
Member Contributer trjerm Posted September 26, 2011 Member Contributer Share Posted September 26, 2011 I don't know, but anything 350lbs or under would be pretty special, which these bike are (RV4's, the 340lb RC30). I was curious as to what my VFRR and stock 94 weighed, so I took the bathroom scale to the garage and my mostly stock 94 weighed 256lbs front + 270lbs rear wheel on scale = 526lbs wet. Its stock except for a Corbin seat and backrest, gel pad on seat, yosh slip on, 954 shock, speigler kit w/ k+n superbike bars, and a gold valve in front forks. I then measured my 94 VFRR, I measured 218lbs front + 208lbs rear= 426 lbs wet (w 3/4 tank of premium) or 100lbs less than stock. It is far from stock in that it has Airtech RVF race fairing and tail, GSXR forks, Kosman Adjustable triples, PM 6 piston calipers biting 340mm full floating iron rotors, CBR600RR front wheel, polished frame thats had the steering stem steeped 1 degree, tapered bearings, BLS hand made rear sets, BLS one off non cush rear srocket carrier and rear brake brake for 2 piston pm cailper, RC45 rear wheel and 120/ 190 PP2CTs and an extensively modified eng. (approx. $6K to build motor= approx 125-130 HP) Losing an additonal 100 lbs!!! would be awesome but extremely expensive, but getting down to 390-400lbs could be easy for track trim ( Remove headlight assy and bracket, side stand, license plate, bracket + frame, plus could put on the aluminum tube rear sub frame, remove the rotor/ stator assy and starter and the stock wiring harness and run full loss and I think I'd be between 380-390 lbs wet)) lossing much more would be big $$$ Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted September 29, 2011 Member Contributer Share Posted September 29, 2011 Thanks for posting the weight of your bike! I weighed my old 5th gen a while back, 520 lbs with a full tank and a TBR slip on was the only mod. Do you have a stock tank on your bike? Switching to a double sided swing arm would probably save you a few pounds as well, but you're probably most of the way there with that custom rear hub. Link to comment Share on other sites More sharing options...
Guest Posted October 9, 2011 Share Posted October 9, 2011 How's goin on your project, my trackday rained away, yesterday. and had to cancel the Mugello trip, so it's finished for this year, Back to the Drawing board , new project : VTR 1000 SP 1/2 Colin Edwards Replica. ( RC51) In stars and stripes livery , Nice bike !! Link to comment Share on other sites More sharing options...
Guest Posted October 20, 2011 Share Posted October 20, 2011 The exhaust works very good with a stock engine , a little loud, 105 db I'm glad to hear the exhaust works well with the stock motor. Hey guys, nice to see some movement on this topic. This is turning into a really nice thread! I've been a bit slow but have a 5th Gen project in the works along the same lines. I'm looking at a GSXR1000 K8 front-end, CBR954 swingarm and a host of other goodies (will reveal as they are actually installed). I will also need to go to a split 2/1 system on a stock-ish Gen5 engine, with the same problem as you; namely no room to package the exhaust around the new swingarm. Is anyone willing to disclose runner lengths on a 2/1 system? Obviously we can't even use the original lengths as they join diagonal cylinders, not adjacent ones. Some info on this would be a huge help in designing a custom system - something I'll have to do but know nothing about... RV4 - since you have the experience, any limitations with a split 2/1 system? Traditionally a 4/2/1 system helps eliminate torque holes by spreading the scavenging zone across the rev-range (or something...) It would be nice to get a target length so we don't end up with a peaky pipe design. Kostritzer, did you have any plans/solutions for this? Another problem I have is dealing with a 25mm swingarm axle shaft. As the 5th gen pivots through the rear of the cases, there are two steel inserts to support the swingarm pivot bolt. I'd like to keep the 25mm axle, and am wondering if I can get away with boring out the steel inserts in the cases, this would be a good way to go, only problem is removing 2.5mm from the insert wall thickness is probably a bit brave... I wonder what minimum wall thickness I can get away with? I might be able to use a HS-steel that could work... Has anyone had experience with engine-case swingarm pivots? General problem with VFR steering headstock bearings - I was about to go and order a set of tapered roller bearings then realised the bearing seats in the frame are only 8mm deep. These are designed to provide enough seating depth for a angular contact spherical ball bearing with a very narrow outer race - as are the original Honda bearings. If you push a tapered roller bearing into this, using the bottom bearing as an example, a standard size tapered roller for the bottom is 30x55x17mm. This means that when seated, the outer race is only supported to 8mm depth - 9mm, or more than Half the depth of the outer race, sits in air, unsupported. Has this ever been considered by anyone, or been an issue before? To me it defeats the whole purpose of going to tapered rollers - it sounds scary that more than half my LOWER headstock bearing is not seated... Any thoughts? Is this the same on the 4th Gen frames? Thanks all. Link to comment Share on other sites More sharing options...
Veefer800Canuck Posted October 21, 2011 Share Posted October 21, 2011 General problem with VFR steering headstock bearings - I was about to go and order a set of tapered roller bearings then realised the bearing seats in the frame are only 8mm deep. These are designed to provide enough seating depth for a angular contact spherical ball bearing with a very narrow outer race - as are the original Honda bearings. If you push a tapered roller bearing into this, using the bottom bearing as an example, a standard size tapered roller for the bottom is 30x55x17mm. This means that when seated, the outer race is only supported to 8mm depth - 9mm, or more than Half the depth of the outer race, sits in air, unsupported. Has this ever been considered by anyone, or been an issue before? To me it defeats the whole purpose of going to tapered rollers - it sounds scary that more than half my LOWER headstock bearing is not seated... Any thoughts? Is this the same on the 4th Gen frames? Thanks all. No worries. See here: http://www.vfrdiscussion.com/forum/index.php/topic/28433-rc51-front-end-swap/page__view__findpost__p__336321 Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted November 5, 2011 Member Contributer Share Posted November 5, 2011 How's goin on your project, my trackday rained away, yesterday. and had to cancel the Mugello trip, so it's finished for this year, Back to the Drawing board , new project : VTR 1000 SP 1/2 Colin Edwards Replica. ( RC51) In stars and stripes livery , Nice bike !! Well, sad to say that I've abandoned my project, at least for the time being. I picked up a lightly used 2011 Daytona 675, and feel like this may be the bike I was trying to build. It makes power in the same manner as a VFR(although a little more peak actually) its light, and steers/handles like my old 600RR(maybe better actually). I may pick the VFR project back up if I have time, but with 15 yr and 3 yr old daughters to deal with, I just don't have the time for a project at the moment. Link to comment Share on other sites More sharing options...
douglasthecook Posted November 7, 2011 Share Posted November 7, 2011 Hey now, I have two daughters, one is 13, and the other is 9. The bike helps keep me sane, as there are times when I must escape all the estrogen that's trying to take over the house!!! Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted November 7, 2011 Member Contributer Share Posted November 7, 2011 Hey now, I have two daughters, one is 13, and the other is 9. The bike helps keep me sane, as there are times when I must escape all the estrogen that's trying to take over the house!!! EXACTLY! That's why I needed a running bike! It was hard to escape on the project bike! Link to comment Share on other sites More sharing options...
douglasthecook Posted November 8, 2011 Share Posted November 8, 2011 Hey now, I have two daughters, one is 13, and the other is 9. The bike helps keep me sane, as there are times when I must escape all the estrogen that's trying to take over the house!!! EXACTLY! That's why I needed a running bike! It was hard to escape on the project bike! Fair enough!!! That's something that I didn't consider. Although being stationed in Germany, I'm not able to ride a good 4-6 months out of the year, depending on the weather, this is when I retreat to my garage, and complete my winter projects... Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted November 9, 2011 Member Contributer Share Posted November 9, 2011 Hey now, I have two daughters, one is 13, and the other is 9. The bike helps keep me sane, as there are times when I must escape all the estrogen that's trying to take over the house!!! EXACTLY! That's why I needed a running bike! It was hard to escape on the project bike! Fair enough!!! That's something that I didn't consider. Although being stationed in Germany, I'm not able to ride a good 4-6 months out of the year, depending on the weather, this is when I retreat to my garage, and complete my winter projects... Yeah, we're pretty spoiled here in Southern California. The high today is going to be 76 degrees fahrenheit, we can pretty much ride all year round. I would love to tour Germany one of these days though! I'm thinking of finishing my project up "on the cheap". Probably a 900RR swingarm and F4i front end or similar. Link to comment Share on other sites More sharing options...
Guest Posted November 30, 2011 Share Posted November 30, 2011 Btec: I haven't spotted any reduction in the Torque, but what I spotted it rev's higher 11500 before the engine mods, now it's revving 12500 and pulling to the limiter , (12500) I think it possible to experiment pipelenghts : the one set that I had manufactured are 40 cm long each and then joined in one 5 cm before entering the Silencer/muffler ! I considering diff. length of pipes before the Silencer this will be tested next year. Now it is to cold ! Link to comment Share on other sites More sharing options...
timmythecop Posted November 30, 2011 Share Posted November 30, 2011 somehow you got a piece of crap on yer bike. Please handle. I can send you some wipes...... Link to comment Share on other sites More sharing options...
Guest Posted December 6, 2011 Share Posted December 6, 2011 Btec: I haven't spotted any reduction in the Torque, but what I spotted it rev's higher 11500 before the engine mods, now it's revving 12500 and pulling to the limiter , (12500) I think it possible to experiment pipelenghts : the one set that I had manufactured are 40 cm long each and then joined in one 5 cm before entering the Silencer/muffler ! I considering diff. length of pipes before the Silencer this will be tested next year. Now it is to cold ! Ah, great. Thanks for that! I think I'll try these runner lengths and stick to the standard diameters. I thought of something the other night, I wonder if you could stagger the exhaust runner lengths between the two vee's - so you have one a bit longer and one a bit shorter. In theory to spread or smooth out the torque band - like they do with unequal length inlet trumpets on some inline fours (GSXR750 for example). Link to comment Share on other sites More sharing options...
Guest Posted December 24, 2011 Share Posted December 24, 2011 btec ; That I haven't tried, sounds intresting, tell me how it works ! The torque in my bike is good enough, need more revs Link to comment Share on other sites More sharing options...
Member Contributer luigi Posted January 19, 2012 Member Contributer Share Posted January 19, 2012 Yes I'm here! and the weight is 140 kg which should be est 280 lbs, it has amercian Braketech rotors... So, i'm not the only one that dreams a VFR as a really racer... Mine is renamed VFR 800 RR. Congratulations RV4, great job!!! Ciao, Luigi. Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted January 19, 2012 Member Contributer Share Posted January 19, 2012 Of course it's modified!!! and I will not tell what for the moment, because its scheduled for something next year... OK. Year is well up. Time to spill the beans. :lurk: Link to comment Share on other sites More sharing options...
Guest Posted March 20, 2012 Share Posted March 20, 2012 It's still bloody cold outthere ! maybe late april, the track will be ok, but now, no thank you ! Link to comment Share on other sites More sharing options...
Member Contributer mello dude Posted March 20, 2012 Member Contributer Share Posted March 20, 2012 ^^^^^^ Yes - would love to hear an update! Link to comment Share on other sites More sharing options...
Member Contributer kostritzer Posted March 20, 2012 Member Contributer Share Posted March 20, 2012 +1000! Link to comment Share on other sites More sharing options...
flyguyeddy Posted April 2, 2012 Share Posted April 2, 2012 Bump for updates! We demand them! Link to comment Share on other sites More sharing options...
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